public enum QiZi implements QiZiInterface {
    BLACK("黑") {
        @Override
        public String show() {
//            System.out.println(" * ");
            return " @ ";
        }
    }, WHITE("白") {
        @Override
        public String show() {
//            System.out.println(" # ");
            return " # ";
        }
    };

    private final String color;

    private QiZi(String color) {
        this.color = color;
    }
}